Free Online JSON Formatter & Beautifier
Format, beautify, and validate JSON online. Indent, tree view, copy, and download clean JSON instantly. 100% client-side and free.
100% Client-Side Privacy (No Upload)
Input JSON164 chars
Formatted Output
Formatted JSON result will appear here...
How to Use JSON Formatter & Beautifier
- 1Paste your raw or messy JSON string into the input code area.
- 2Choose your desired indentation size (2 spaces, 4 spaces, or Tab).
- 3Click 'Format JSON' to beautify your code instantly with syntax highlight.
- 4Copy the clean output to clipboard or download it as a .json file.
Key Features
- 100% Client-side execution: your code never leaves your device.
- Supports large JSON payload parsing with real-time error detection.
- Custom indentation formatting (2 spaces, 4 spaces, compact tab).
- One-click copy to clipboard and `.json` file download.
- Tree view mode for collapsing and expanding complex nested objects.
Frequently Asked Questions (FAQ)
A JSON Formatter is an online tool that transforms compact, unformatted, or minified JSON strings into a clean, human-readable format with proper indentations and line breaks.
Related Developer Tools
JSON Tools
JSON Validator & Lint
Validate JSON syntax, detect line-by-line syntax errors, and fix JSON bugs.
Try Tool
JSON Tools
JSON Minifier & Compressor
Compress JSON strings by stripping whitespace, line breaks, and indentation.
Try Tool
JSON Tools
JSON to CSV Converter
Convert JSON array structures to downloadable CSV spreadsheet files.
Try Tool